Quantcast
ZME Science
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    Menu
    Natural Sciences
    Health
    History & Humanities
    Space & Astronomy
    Technology
    Culture
    Resources
    Natural Sciences

    Physics

    • Matter and Energy
    • Quantum Mechanics
    • Thermodynamics

    Chemistry

    • Periodic Table
    • Applied Chemistry
    • Materials
    • Physical Chemistry

    Biology

    • Anatomy
    • Biochemistry
    • Ecology
    • Genetics
    • Microbiology
    • Plants and Fungi

    Geology and Paleontology

    • Planet Earth
    • Earth Dynamics
    • Rocks and Minerals
    • Volcanoes
    • Dinosaurs
    • Fossils

    Animals

    • Mammals
    • Birds
    • Fish
    • Reptiles
    • Amphibians
    • Invertebrates
    • Pets
    • Conservation
    • Animals Facts

    Climate and Weather

    • Climate Change
    • Weather and Atmosphere

    Geography

    Mathematics

    Health
    • Drugs
    • Diseases and Conditions
    • Human Body
    • Mind and Brain
    • Food and Nutrition
    • Wellness
    History & Humanities
    • Anthropology
    • Archaeology
    • Economics
    • History
    • People
    • Sociology
    Space & Astronomy
    • The Solar System
    • The Sun
    • The Moon
    • Planets
    • Asteroids, Meteors and Comets
    • Astronomy
    • Astrophysics
    • Cosmology
    • Exoplanets and Alien Life
    • Spaceflight and Exploration
    Technology
    • Computer Science & IT
    • Engineering
    • Inventions
    • Sustainability
    • Renewable Energy
    • Green Living
    Culture
    • Culture and Society
    • Bizarre Stories
    • Lifestyle
    • Art and Music
    • Gaming
    • Books
    • Movies and Shows
    Resources
    • How To
    • Science Careers
    • Metascience
    • Fringe Science
    • Science Experiments
    • School and Study
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact
No Result
View All Result
ZME Science

No Result
View All Result
ZME Science

Home → Science → Geology

Researchers have figured out how the Giant’s Causeway came to be

A giant mystery has been solved.

Mihai Andrei by Mihai Andrei
April 23, 2018
in Geology

A new study by University of Liverpool geologists has uncovered the secrets of one of the planet’s most impressive geological features: columnar basalts, such as those at the Giant’s Causeway in Northern Ireland.

Hexagonal columnar basalts at the Giant’s Causeway. Image credits: Chmee2 / Wikipedia.

The Giant’s Causeway is an area of 40,000 interlocking geometrical basalt columns which were created after a volcanic eruption some 60 million years ago, during a period called the Tertiary. The resulting columns have regular, hexagonal shapes, which have inspired myths, legends, and most recently, geologists.

When a thick lava flows and starts to solidify and cool down, it compresses and starts to fracture. If it cools down very fast, the compressional forces that act on the lava are very strong and can create a regular, cellular system of fractures. These fractures often create hexagonal structures, though shapes with a different number of sides can also be created. If the conditions are right, the resulting columns have smooth geometric shapes.

Researchers have known about this process for quite a while but the temperature at which this process takes place was still a question mark. Now, University of Liverpool researchers have designed a new type of experiment to show how as magma cools, it contracts and accumulates stress, until it cracks.

They recreated the formation of columnar basalts, finding that they fracture when they cool from around 90 to 140˚C below the temperature at which magma crystallizes into rock — which is about 980˚C for basalts. This means that basalts such as those at the Giant’s Causeway were formed at temperatures of around 840-890 ˚C.

Yan Lavallée, Professor of Volcanology, who headed the research, explains:

“The temperature at which magma cools to form these columnar joints is a question that has fascinated the world of geology for a very long time. We have been wanting to know whether the temperature of the lava that causes the fractures was hot, warm or cold.

“I have spent over a decade pondering how to address this question and construct the right experiment to find the answer to this question. Now, with this study, we have found that the answer is hot, but after it solidified.”

Stuðlaberg (Columnar basalt) in Breiðafjörður, Iceland. Image credits: Zinneke / Wikipedia.

Understanding the thermal constraints of this process is not only important for solving a geological mystery, it could also be useful for geothermal energy harnessing — the point at which magma starts to fracture is also the point at which it initiates fluid circulation in the fracture network.

“Fluid flow controls heat transfer in volcanic systems, which can be harnessed for geothermal energy production. So the findings have tremendous applications for both volcanology and geothermal research,” says Dr Jackie Kendrick, a post-doctoral researcher in the group.

 

Journal Reference: Anthony Lamur et al. Disclosing the temperature of columnar jointing in lavas. doi:10.1038/s41467-018-03842-4

Was this helpful?


Thanks for your feedback!

Related posts:
  1. Scientists think they’ve figured out why green tea helps you lose weight
  2. Scientists have figured out why bearcats smell like buttered popcorn
  3. Humans figured out how to start fires way sooner than expected
  4. An Exxon subsidiary figured out how to stop climate change 30 years ago — and we’re not even close
  5. Archeologists may have figured out why American rabbits were never domesticated
Tags: basaltcolumnar basaltGeology

ADVERTISEMENT
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
  • Reviews
  • More
  • About Us

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

No Result
View All Result
  • News
  • Environment
  • Health
  • Future
  • Space
  • Features
    • Natural Sciences
    • Health
    • History and Humanities
    • Space & Astronomy
    • Culture
    • Technology
    • Resources
  • Reviews
  • More
    • Agriculture
    • Anthropology
    • Biology
    • Chemistry
    • Electronics
    • Geology
    • History
    • Mathematics
    • Nanotechnology
    • Economics
    • Paleontology
    • Physics
    • Psychology
    • Robotics
  • About Us
    • About
    • The Team
    • Advertise
    • Contribute
    • Privacy Policy
    • Contact

© 2007-2021 ZME Science - Not exactly rocket science. All Rights Reserved.

Don’t you want to get smarter every day?

YES, sign me up!

Over 35,000 subscribers can’t be wrong. Don’t worry, we never spam. By signing up you agree to our privacy policy.

✕
ZME Science News

FREE
VIEW